VS4 series vertical centrifugal pumps are designed according to the American Petroleum Institute API610 11th specification, and are divided into 3 structural forms. VS4 series vertical centrifugal pumps are designed according to the American Petroleum Institute API610 11th specification, and are divided into 3 structural forms. HY type is a vertical single-stage or multiple-stage, first-level single-suction centrifugal pump, suitable for transporting various clean or contaminated, low temperature or high temperature, chemical neutral or corrosive media, especially suitable for transporting wastewater, wastewater and other media. HL type is vertical pump is a suspended long shaft liquid under sulfur pump, suitable for transporting sulfur media. HL type is vertical pump is a suspended long shaft liquid under sulfur pump, suitable for transporting sulfur media. HRY type vertical pump is a suspended long shaft liquid under high temperature pump, suitable for conveying high temperature media. HRY type vertical pump is a suspended long shaft liquid under high temperature pump, suitable for conveying high temperature media.